Changing The Tool - Bosch GBH 4-32 DFR Manual Original

OBJ_BUCH-337-007.book Page 15 Monday, December 2, 2013 12:32 PM
– The tool holder 1 or the quick change keyless chuck 13 is
automatically locked. Check the locking effect by pulling
the tool holder.

Changing the Tool

With the SDS-plus tool holder, simple and convenient tool
changing is possible without additional aids.
As a requirement of the system, the SDS-plus drilling tool can
move freely. This causes a certain radial run-out at no-load,
which has no effect on the accuracy of the drill hole, as the
drill bit centres itself upon drilling.
The dust protection cap 2 largely prevents the entry of drilling
dust into the tool holder during operation. When inserting the
tool, take care that the dust protection cap 2 is not damaged.
 A damaged dust protection cap should be changed im-
mediately. We recommend having this carried out by
an after-sales service.
Inserting SDS-plus Drilling Tools (see figure C)
– Clean and lightly grease the shank end of the tool.
– Insert the tool in a twisting manner into the tool holder until
it latches itself.
– Check the latching by pulling the tool.
Removing SDS-plus Drilling Tools (see figure D)
– Push back the locking sleeve 3 and remove the tool.
Inserting Drilling Tools without SDS-plus (see figure E)
Note: Do not use tools without SDS-plus for hammer drilling
or chiselling! Tools without SDS-plus and their drill chucks are
damaged by hammer drilling or chiselling.
– Insert the quick change keyless chuck 13.
– Firmly hold the retaining ring of the quick change keyless
chuck 13. Open the quick change keyless chuck by turning
the front sleeve in the direction of the symbol
" ".
– Insert the drilling tool into the quick change keyless chuck
13. Firmly hold the retaining ring of the quick change key-
less chuck 13 and turn the front sleeve in the direction of
the symbol " ".
– Check the tight seating by pulling the tool.
Note: If the tool holder was opened to the stop, then the latch-
ing noise possibly may be heard while closing the tool holder
and the tool holder will not close.
In this case, turn the front sleeve 14 once in the opposite di-
rection of the arrow. Afterwards, the tool holder can be
closed (tightened) again.
– Turn the mode selector switch 5 to the "drilling" position.
Removing Drilling Tools without SDS-plus (see figure E)
– Firmly hold the retaining ring of the quick change keyless
chuck 13. Open the quick change keyless chuck by turning
the front sleeve in the direction of the symbol
" ".
– Remove the drilling tool.
Bosch Power Tools
Dust Extraction with the Dust Extraction Attach-
ment (Accessory)
 Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one's health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
 Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Mounting the Dust Extraction Attachment (see figure F)
For dust extraction, the dust extraction attachment (accesso-
ry) is required. When drilling, the dust extraction attachment
retracts so that the attachment head is always close to the
surface at the drill hole.
– Press the button for depth stop adjustment 9 and remove
the depth stop 11. Press button 9 again and insert the dust
extraction attachment into the auxiliary handle 10 from the
front.
– Connect an extraction hose (diameter 19 mm, accessory)
to the extraction sleeve 16 of the dust extraction attach-
ment.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Adjusting the Drilling Depth on the Dust Extraction At-
tachment (see figure G)
The required drilling depth X can also be adjusted when the
dust extraction attachment is mounted.
– Insert the SDS-plus drilling tool to the stop into the SDS-
plus tool holder 1. Otherwise, the movability of the SDS-
plus drilling tool can lead to incorrect adjustment of the
drilling depth.
– Loosen the wing bolt 20 on the dust extraction attach-
ment.
– Without switching the power tool on, apply it firmly to the
drilling location. The SDS-plus drilling tool must face
against the surface.
– Position the the guide pipe 21 of the dust extraction at-
tachment in its holding fixture in such a manner that the
head of the dust extraction attachment faces against the
surface to be drilled. Do not slide the guide pipe 21 further
over the telescopic pipe 19 of the dust extraction attach-
ment than required, so that as much as possible of the
scale 19 on the telescopic pipe remains visible.
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1 619 92A 06G | (2.12.13)